The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642009000200002 |
Resumo: | It is well known that the breakdown potential (Eb) and the open circuit potential (Eocp) are important parameters to evaluate the resistance of metallic materials against corrosion. Nevertheless, the literature presents scattered values of these parameters for stainless steels (SS). Many factors may contribute to this dispersion of published Eb and Eocp values. It has been proposed that the finishing and/or final treatment of the surface is one of those factors. To address this question, the influence of the surface finishing on the average roughness (Ra), residual stress (t) and electrochemical behaviour of DIN 1.4404 and DIN 1.4410 have been considered. Samples from both steels were prepared with different finishing degrees with SiC paper. Roughness, residual stress and electrochemical tests were performed on samples with various surface finishing. Electrochemical studies were conducted in an Avesta cell and steel electrodes immersed in 1 M NaCl or 0.5 M MgCl2 aqueous solutions. We found that when steels are immersed in sodium chloride or magnesium chloride aqueous solutions there is no significant change in the variation of the Eocp and Eb values as the average roughness increases and therefore we can conclude that these parameters are not affected by the final treatment or by the solution composition. |
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The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steelsDIN 1.4404DIN 1.4410Surface FinishingElectrochemical ParametersIt is well known that the breakdown potential (Eb) and the open circuit potential (Eocp) are important parameters to evaluate the resistance of metallic materials against corrosion. Nevertheless, the literature presents scattered values of these parameters for stainless steels (SS). Many factors may contribute to this dispersion of published Eb and Eocp values. It has been proposed that the finishing and/or final treatment of the surface is one of those factors. To address this question, the influence of the surface finishing on the average roughness (Ra), residual stress (t) and electrochemical behaviour of DIN 1.4404 and DIN 1.4410 have been considered. Samples from both steels were prepared with different finishing degrees with SiC paper. Roughness, residual stress and electrochemical tests were performed on samples with various surface finishing. Electrochemical studies were conducted in an Avesta cell and steel electrodes immersed in 1 M NaCl or 0.5 M MgCl2 aqueous solutions. We found that when steels are immersed in sodium chloride or magnesium chloride aqueous solutions there is no significant change in the variation of the Eocp and Eb values as the average roughness increases and therefore we can conclude that these parameters are not affected by the final treatment or by the solution composition.LNEG - Laboratório Nacional de Energia e Geologia, I.P.2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642009000200002Corrosão e Protecção de Materiais v.28 n.2 2009reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642009000200002Costa,S. A.Pimenta,G.Fonseca,I. T. E.info:eu-repo/semantics/openAccess2024-02-06T16:58:49Zoai:scielo:S0870-11642009000200002Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:15:23.354019Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels |
title |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels |
spellingShingle |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels Costa,S. A. DIN 1.4404 DIN 1.4410 Surface Finishing Electrochemical Parameters |
title_short |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels |
title_full |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels |
title_fullStr |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels |
title_full_unstemmed |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels |
title_sort |
The influence of the surface finishing on the electrochemical behaviour of DIN 1.4404 and DIN 1.4410 steels |
author |
Costa,S. A. |
author_facet |
Costa,S. A. Pimenta,G. Fonseca,I. T. E. |
author_role |
author |
author2 |
Pimenta,G. Fonseca,I. T. E. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Costa,S. A. Pimenta,G. Fonseca,I. T. E. |
dc.subject.por.fl_str_mv |
DIN 1.4404 DIN 1.4410 Surface Finishing Electrochemical Parameters |
topic |
DIN 1.4404 DIN 1.4410 Surface Finishing Electrochemical Parameters |
description |
It is well known that the breakdown potential (Eb) and the open circuit potential (Eocp) are important parameters to evaluate the resistance of metallic materials against corrosion. Nevertheless, the literature presents scattered values of these parameters for stainless steels (SS). Many factors may contribute to this dispersion of published Eb and Eocp values. It has been proposed that the finishing and/or final treatment of the surface is one of those factors. To address this question, the influence of the surface finishing on the average roughness (Ra), residual stress (t) and electrochemical behaviour of DIN 1.4404 and DIN 1.4410 have been considered. Samples from both steels were prepared with different finishing degrees with SiC paper. Roughness, residual stress and electrochemical tests were performed on samples with various surface finishing. Electrochemical studies were conducted in an Avesta cell and steel electrodes immersed in 1 M NaCl or 0.5 M MgCl2 aqueous solutions. We found that when steels are immersed in sodium chloride or magnesium chloride aqueous solutions there is no significant change in the variation of the Eocp and Eb values as the average roughness increases and therefore we can conclude that these parameters are not affected by the final treatment or by the solution composition. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642009000200002 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642009000200002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642009000200002 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
LNEG - Laboratório Nacional de Energia e Geologia, I.P. |
publisher.none.fl_str_mv |
LNEG - Laboratório Nacional de Energia e Geologia, I.P. |
dc.source.none.fl_str_mv |
Corrosão e Protecção de Materiais v.28 n.2 2009 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137254192447488 |